Sony's cinema-style full-frame mirrorless — A7S III internals in a compact Cinema Line body with active cooling.
The Sony FX3 launched in 2021 as part of Sony's Cinema Line, essentially repackaging the A7S III's 12.1MP full-frame sensor and video capabilities in a cinema-oriented body with a built-in cooling fan and multiple mounting points for accessories.
The 12.1MP BSI Exmor R sensor delivers outstanding low-light video with dual base ISO at 800 and 12800. Records 4K 120p 10-bit 4:2:2 internal. S-Cinetone colour profile. 759-point phase-detect AF with real-time tracking. Active cooling enables unlimited recording without overheating.
Compact body at 640g with built-in cooling fan. 5-axis IBIS with Active stabilisation mode. Full-size HDMI output. Dual XLR audio via handle accessory. Dual CFexpress Type A / SD card slots. No EVF — optional XLR handle with LCD. Multiple 1/4-20 mounting threads.
Available used at professional prices. Functionally identical to A7S III for video — the cinema body adds cooling, mounting, and tally. Check cooling fan operation. For professional video shooters who want Sony's best video sensor in a production-ready body.